docs(article): add article example

Author: 2534290808

README.md

@@ -14,7 +14,7 @@ To use this plugin, add `flutter_weui` as a [dependency in your pubspec.yaml fil
 
 - [`Button`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/button_example.dart)
 - [`ActionSheet`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/action_sheet_example.dart)
-- [`Article`]()
+- [`Article`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/article_example.dart)
 - [`Cell`]()
 - [`Dialog`]()
 - [`Footer`]()

README_zh-CN.md

@@ -14,7 +14,7 @@
 
 - [`Button`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/button_example.dart)
 - [`ActionSheet`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/action_sheet_example.dart)
-- [`Article`]()
+- [`Article`](https://github.com/flutter-studio/flutter-weui/blob/master/example/lib/article_example.dart)
 - [`Cell`]()
 - [`Dialog`]()
 - [`Footer`]()

example/lib/article_example.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_weui/flutter_weui.dart';
+class ArticleExample extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text("Article"),),
+      body: Container(
+        child:  Article(
+          children: <Widget>[
+            H1(
+              text: "大标题",
+            ),
+            Section(
+              children: <Widget>[
+                H2(text: "章标题"),
+                Section(
+                  children: <Widget>[
+                    H3(
+                      text: "节标题",
+                    ),
+                    P(
+                      text:
+                      '''Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmodtempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo''',
+                    )
+                  ],
+                )
+              ],
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}